858 SYSTEMATIC PALEONTOLOGY 



In common with numerous existing and fossil species of Sterculia it is 

 an exceedingly variable form in the number of its lobes, but is other- 

 wise well characterized. It is only known from the Magothy forma- 

 tion and ranges from Earitan Bay, in New Jersey, to Maryland. The 

 modern species of Sterculia number upwards of one hundred. They are 

 divided into three sections, Digitate, Lobate, and Integrifolise. The 

 first is almost entirely oriental (farther India to New South Wales) with 

 only one endemic American species (in Mexico). The second is found 

 in Asia, Africa, Australia, and America. It contains more existing 

 species in America than either of the other two sections and all of the 

 rather numerous Middle Cretaceous species of America, including the 

 present form, appear to belong in this section. The third section is repre- 

 sented in the modern flora of Asia, Africa, and America (five or six 

 species). 



The present species is not unlike some of the smaller forms of Sterculia 

 mucronata Lesquereux 1 It is also very similar to and probably represents 

 an ancestral form of Sterculia labruscoides Berry, a Middle Eocene (Clai- 

 borne) species of the Mississippi embayment region. Several recent 

 tropical American species of the section Lobate resemble it more or less 

 closely. Perhaps the most similar modern form is Sterculia diversifolia 

 Don, especially the variety occidentalis Bentham of the Australian region 

 as pointed out by the writer in 1903. 



Occurrence. MAGOTHY FORMATION. Grove Point, Cecil County, 

 Maryland; Deep Cut, Delaware. 



Collection. Maryland Geological Survey. 



STERCULIA CLIFFWOODENSIS Berry 

 Plate LXXX, Fig. 4 



Sterculia cliffwoodensis Berry, 1903, Bull. N. Y. Bot. Garden, vol. iii, p. 88, 



pi. xliii, fig. 5. 

 Sterculia, cliffwoodensis Berry, 1906, Bull. Torrey Bot. Club, vol. xxxiii, p. 



178. 



1 Lesquereaux, Mon. U. S. Geol. Survey, vol. xvii, 1892, p. 182, pi. xxx, 

 figs. 1-4. 



